Waveshare 7.5-inch NFC e-Paper Eval Kit

The Waveshare 7.5-inch NFC e-Paper Eval Kit is a cutting-edge display solution that combines the benefits of e-paper technology with NFC functionality. It allows users to refresh the display content wirelessly using an NFC-enabled smartphone or an NFC reader. The kit includes a versatile NFC board with an ST25R3911B NFC chip, an AT32F413RBT7 controller, and a range of interfaces and features for easy integration and development.

How It Works

To refresh the display content, use a smartphone with NFC function or an NFC reader. Simply bring the device close to the e-paper for both wireless powering and data transfer.

Key Components

• ST25R3911B: NFC chip, also known as AS3911B.
• AT32F413RBT7: Controller with the following specifications:
  • Core: ARM® 32-bit Cortex™-M4F
  • Operating Frequency: 200MHz
  • Operating Voltage: 2.0V-3.6V
  • Package: LQFP64
  • Memories: 128kB Flash, 32kB SRAM
  • Communication Interfaces: 2 x SPI, 5 x USART, 2 x I2C, 2 x CAN, 1 x USB, 1 x SDIO
  • AD & DA Converters: 2 x AD (12-bit, shares 16 channels)
• 23LC1024: SRAM, 1Mbit
• CP2102: USB TO UART converter, for debugging
• SPX3819: 3.3V voltage regulator

Additional Features

• 1.3" OLED: Blue display, 128×64 pixels, SH1106 driver
• 4x User Buttons
• 2x User Indicators
• MCU Unused Pins
• USB TO UART Port
• Micro SD Slot
• SWD Programming Interface
• NFC Induction Coil

UART Pin Configuration

• RXD: Connected to RXD2 by default, changeable to RXD1 via 0Ω resistor
• TXD: Connected to TXD2 by default, changeable to TXD1 via 0Ω resistor

Specifications of Waveshare 7.5-inch NFC e-Paper Eval Kit

• Operating Voltage: 3.3V / 5V
• Display Color: ACeP 7-Color
• Resolution: 600×448 pixels
• Grey Scale: 2
• Interface: 3-wire SPI, 4-wire SPI
• Viewing Angle: >170°
• Partial Refresh Time: N/A
• Full Refresh Time: <35s
• Outline Dimensions: 128 × 101.5mm
• Display Size: 114.9 × 85.8mm
• Refresh Power: 50mW (typical)
• Standby Current: <0.01uA (almost none)
• Dot Pitch: 0.1915 × 0.1915mm

Manufacture of Waveshare 7.5-inch NFC e-Paper Eval Kit

7.5inch NFC-Powered e-Paper Evaluation Kit, Wireless Powering & Data Transfer

http://www.waveshare.com/wiki/7.5inch_NFC-Powered_e-Paper